Blender 2.8 How do I fix the gloss on this mesh?
Some of the point:


You can change the strength of normal by using normal map node
The second wood of your picture seems to have a clearcoat on it, there is an attribute to do that effect too
The roughness change how light reflective




Try it your self, and most of the time you will get specular or roughness or smoothness(?) image map as well. You can use those images as input